Abstract
Postharvest application of 1-methylcycloprepene (1-MCP) on banana fruit to extend shelf-life and maintain quality is inconsistent as treated fruit do not ripen uniformly. Banana response to 1-MCP treatment can be variable due to within-bunch variation in fruit size, composition, and maturity. Therefore, the present study investigated whether fruit size variation explains variability in ripening recovery. To investigate this relationship, large, medium, and small fruit were treated with 0 nL L−1 1-MCP (control), 400 nL L−1 1-MCP and 50 µL L−1 ethephon + 400 nL L−1 1-MCP. Fruit were then ripened using 800 µL L−1 ethephon and stored at 23 °C for 30 d. Irrespective of fruit size, treating banana with 1-MCP and ethephon + 1-MCP prolonged shelf-life by 30 d compared to control, which were fully ripe at 15 d for medium and large fruit, and 20 d for small fruit. 1-MCP significantly delayed yellow colour development (colour stage 4), chlorophyll degradation (97.4 µg/g), and sucrose (2.57 mg/g) and glucose (0.86 mg/g) accumulation in small compared to medium and large fruit. However, firmness (56.13 N) and starch (0.68 mg/g) were significantly lower in 1-MCP-treated small-sized fruit compared to medium and large fruit. Moisture loss was also significantly higher (19.49%) in 1-MCP-treated small fruit compared to medium (14.89%) and large (18.11%). Combined ethephon and 1-MCP allowed for an increase in ripening in small, medium, and large fruit. Overall, medium and large fruit treated with 1-MCP and ethephon + 1-MCP recovered their ripening capacity better compared to small fruit. The results demonstrate that 1-MCP efficacy is influenced by fruit size, whereas ethephon + 1-MCP treatment was consistent across small, medium, and large fruit. The effect of fruit size on 1-MCP efficacy might explain the inconsistency of the treatment in the banana fruit. Therefore, it is important to apply 1-MCP on fruit of approximately the same size to achieve the full benefit of the treatment. Moreover, fruit treated with 1-MCP + ethephon recovered their ripening capacity, irrespective of size, suggesting that it is a beneficial treatment.
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Claims 12
Claim · model-written summary
1-MCP prolonged banana shelf life by 30 days relative to control across fruit sizes.
Verbatim
e0“Irrespective of fruit size, treating banana with 1-MCP and ethephon + 1-MCP prolonged shelf-life by 30 d compared to control”
Claim · model-written summary
Ethephon plus 1-MCP prolonged banana shelf life by 30 days relative to control across fruit sizes.
Verbatim
e0“Irrespective of fruit size, treating banana with 1-MCP and ethephon + 1-MCP prolonged shelf-life by 30 d compared to control”
Claim · model-written summary
1-MCP delayed yellow colour development in small versus medium and large banana fruit.
Verbatim
e0“1-MCP significantly delayed yellow colour development (colour stage 4), chlorophyll degradation (97.4 µg/g), and sucrose (2.57 mg/g) and glucose (0.86 mg/g) accumulation in small compared to medium and large fruit.”
t0“Banana”
Claim · model-written summary
1-MCP delayed chlorophyll degradation in small versus medium and large banana fruit.
Verbatim
e0“1-MCP significantly delayed yellow colour development (colour stage 4), chlorophyll degradation (97.4 µg/g), and sucrose (2.57 mg/g) and glucose (0.86 mg/g) accumulation in small compared to medium and large fruit.”
t0“Banana”
Claim · model-written summary
1-MCP delayed sucrose accumulation in small versus medium and large banana fruit.
Verbatim
e0“1-MCP significantly delayed yellow colour development (colour stage 4), chlorophyll degradation (97.4 µg/g), and sucrose (2.57 mg/g) and glucose (0.86 mg/g) accumulation in small compared to medium and large fruit.”
t0“Banana”
Claim · model-written summary
1-MCP delayed glucose accumulation in small versus medium and large banana fruit.
Verbatim
e0“1-MCP significantly delayed yellow colour development (colour stage 4), chlorophyll degradation (97.4 µg/g), and sucrose (2.57 mg/g) and glucose (0.86 mg/g) accumulation in small compared to medium and large fruit.”
t0“Banana”
Claim · model-written summary
Firmness was lower in 1-MCP-treated small banana fruit than in medium and large fruit.
Verbatim
e0“firmness (56.13 N) and starch (0.68 mg/g) were significantly lower in 1-MCP-treated small-sized fruit compared to medium and large fruit.”
t0“Banana”
Claim · model-written summary
Starch was lower in 1-MCP-treated small banana fruit than in medium and large fruit.
Verbatim
e0“firmness (56.13 N) and starch (0.68 mg/g) were significantly lower in 1-MCP-treated small-sized fruit compared to medium and large fruit.”
t0“Banana”
Claim · model-written summary
Moisture loss was higher in 1-MCP-treated small banana fruit than medium and large fruit.
Verbatim
e0“Moisture loss was also significantly higher (19.49%) in 1-MCP-treated small fruit compared to medium (14.89%) and large (18.11%).”
t0“Banana”
Claim · model-written summary
Combined ethephon and 1-MCP increased ripening in banana fruit of all three sizes.
- Taxon
- Bananat0
- Treatment
- Combined ethephon and 1-MCPe0
- Outcome
- ripeninge0
- Direction
- increasee0
- Qualifier
- small, medium, and large fruite0
Not reportedComparator
Verbatim
e0“Combined ethephon and 1-MCP allowed for an increase in ripening in small, medium, and large fruit.”
t0“Banana”
Claim · model-written summary
Medium and large 1-MCP-treated banana fruit recovered ripening better than small fruit.
Verbatim
e0“medium and large fruit treated with 1-MCP and ethephon + 1-MCP recovered their ripening capacity better compared to small fruit.”
t0“Banana”
Claim · model-written summary
Banana fruit should be approximately the same size when 1-MCP is applied.
Verbatim
e0“it is important to apply 1-MCP on fruit of approximately the same size to achieve the full benefit of the treatment.”
t0“Banana”
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